Why Geothermal is Transforming HVAC
A geothermal heat pump with a COP (Coefficient of Performance) of 4.0 delivers 4 kWh of heating for every 1 kWh of electricity consumed. The best gas furnaces are 98% efficient — meaning geothermal is 4x more efficient than the most efficient gas alternative. For homeowners in cold climates with high energy costs, the economics are increasingly compelling — especially with the IRA's 30% tax credit reducing upfront system cost.
What Geothermal Installers Do
Geothermal heat pump installers design and install ground-source heat pump (GSHP) systems — the combination of loop field (the buried pipe system that exchanges heat with the ground) and the heat pump equipment inside the building. The trade uniquely combines HVAC knowledge, drilling or excavation coordination, hydronic systems expertise, and electrical work for a single project type that few contractors can execute end-to-end.
Loop field design is the most specialized skill. The sizing and layout of horizontal trenched loops, vertical bore loops (which require drilling contractors), or pond/lake loops determines the system's long-term efficiency. Poor loop design is one of the most common causes of underperforming geothermal systems — installers with IGSHPA loop design training command a significant premium and have much higher customer satisfaction and referral rates.
The Contractor Opportunity
Most HVAC contractors avoid geothermal because of the drilling coordination and upfront design complexity. This scarcity is exactly what makes geothermal a high-margin specialty. Average geothermal system installations run $20,000–$50,000+ for residential and significantly more for commercial applications — with gross margins of 35–55% for well-run specialty contractors who have the design and drilling relationships in place.
The IRA's 30% residential clean energy tax credit — and the enhanced commercial deduction under Section 179D for commercial buildings — are bringing qualified geothermal systems back into financial consideration for homeowners and building owners who previously found payback periods too long. IGSHPA-trained installers who understand how to model and present the financial case are closing significantly more projects in 2026 than in prior years.